code: def __init__(self, rank):
      self.root = self.Node(None)
      self.nodes = collections.defaultdict(list)
      self.cache = []
      self.rank = rank
  
file_path: mlxtend/mlxtend/frequent_patterns/fpmax.py
imports: import collections
  import math
  from ..frequent_patterns import fpcommon
label_desc: Use image node_id 1 to create a new MFITree object from inherited base classes: object with example: obj = MFITree(rank)